Designation:C924−02(Reapproved2009)StandardPracticeforTestingConcretePipeSewerLinesbyLow-PressureAirTestMethod1ThisstandardisissuedunderthefixeddesignationC924;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope1.1Thispracticecoversproceduresfortestingconcretepipesewerlines,whenusingthelow-pressureairtestmethodtodemonstratetheintegrityoftheinstalledmaterialandtheconstructionprocedures.Thispracticeisusedfortesting4to24-in.circularconcretepipesewerlinesutilizinggasketedjoints.1.2Thispracticeisalsousedasapreliminarytesttoenabletheinstallertodemonstratetheconditionofthelinepriortobackfill.1.3AcompletemetriccompaniontoPracticeC924hasbeendeveloped—C924M;therefore,nometricequivalentsarepre-sentedinthispractice.NOTE1—Theuserofthispracticeisadvisedthatairtestcriteriapresentedinthispracticearesimilartothoseingeneraluse.Thetestandcriteriahavebeenusedwidelyandsuccessfullyintestingsmallerdiameterpipe,butadditionaldataarerequiredtoconfirmthesafetyandapplica-bilityordevelopcriteriaforpipelargerthan24in.indiameter.Largerpipewillbeacceptedmoreconvenientlybyvisualinspectionandindividualjointtesting.NOTE2—Theuserofthispracticeisadvisedthatnocorrelationhasbeenfoundbetweenairlossandwaterleakage.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse(seeSection6,SafetyPrecautions).2.ReferencedDocuments2.1ASTMStandards:2C822TerminologyRelatingtoConcretePipeandRelatedProductsC969PracticeforInfiltrationandExfiltrationAcceptanceTestingofInstalledPrecastConcretePipeSewerLines3.Terminology3.1Definitions—Fordefinitionsoftermsrel...
